imrworldwide uses both Java applet and JavaScript.
Java applet is similar to your Java programs, except that they are on the web. It's very easy when it's triggered - the Java icon will be at your system tray. You won't see it unless you remove that icon.
But that pest is one step ahead of us. It uses Java applet to hide itself, then uses JavaScripts to track. In effect, it is well hidden.
Next, to see the tracking pest, you need JavaScripts enabled.
Before, without JavaScripts enabled:

After JavaScripts is enabled:

Singnet is clean, as far as I can see. Cookies wise, they are clean too. There are no third-party cookies from Singnet.

So anti-PAP people, don't come in and say nonsense.
As proof that there are no tracking cookies, here's a screenshot:

Pacnet is clean as well. Screenshots will be the same as Singnet, no point showing two.
For your curiosity, National Library Board (NLB) website has the tracking pest.
MOE has an extra JavaScript belonging to InetAsia. InetAsia is a web development company, as well as a digital marketing company. Chances are, MOE may have hired InetAsia to develop its website, thus having the JavaScript there as part of the contract. Or, MOE has hired it to do marketing. I won't guess anything, anybody working in MOE will know what's going on.
You can be guaranteed that Mindef won't allow this sort of things on their website. Our country's secrets will be leaked if it does so. Same goes for IRAS. Money going through... no tracking stuff. CPF Board website turns up clean as well.
MCYS - good
MOF - good
MFA - good
MHA - good. Their privacy statement assures us of that.
http://www.mha.gov.sg/privacy.htmlMICA - good. Privacy statement is as clear as MHA.
http://www.mica.gov.sg/privacy.htmlMinLaw (Ministry of Law) - quite an interesting website. It doesn't seem to be hosted on its own. It's hosted by
internet.gov.sg, of which the website doesn't exist. Privacy statement doesn't exist.
MOM (Ministry of Manpower) - good.
Privacy statementMND (Ministry of National Development) - good.
Privacy statementPMO (Prime Minister Office) - good. I don't think he likes people tracking him.
Privacy statementMEWR (Ministry of Environment and Water Resources) - good.
Privacy statementMTI (Ministry of Trade and Industry) - good.
Privacy statementMOT (Ministry of Transport) - good.
Privacy statementOthers, you go and check out yourself.
http://www.gov.sg/govtlist_Minis.htmOf the 3 telecoms here, only Starhub uses the tracking pest.
The 3 free Wifi providers has no tracking scripts or applets...
So those who receive too much spam, you know who revealed you.

On the issue of Starhub using tracking pest, their privacy statement is very wrong.

StarHub takes the issue of your privacy seriously. Generally, you can visit StarHub's websites without telling us who you are or revealing any information about yourself. However, there are services offered on StarHub's websites whereby you may subscribe to by providing to us your personal information as requested. Personal information refers to all and any information relating to you obtained by us in the course of and as a result of the provision of the services by us. Such personal information includes your name, mailing address, phone number and email address. We may use your personal information for the purposes of: planning, provisioning and billing for services; managing bad debt and preventing fraud; facilitating interconnection and inter-operability between service providers; rendering assistance to law enforcement, governmental or regulatory agencies; or complying with any applicable laws or any order of court. With your consent, we may also use your personal information for other lawful purposes, including without limitation, research; customer benefits and retention programme; to support your customer relationship with us.
Please do not send us any confidential or proprietary information via the Internet. Any information (including feedback, data, comments, suggestions, ideas or the like) that StarHub (or its affiliates) receives through its websites, other than your personal information, will be regarded as non-confidential. StarHub may from time to time conduct online surveys and request for information about your interest or your views about specific matters in an effort to improve its services to you. You may choose not to respond. By sending to StarHub non-personal information via StarHub's websites or through any other electronic means, you grant to StarHub and its affiliates an unrestricted, irrevocable license to use, reproduce, display, modify, perform and distribute such non-personal information in any manner and for any purpose as StarHub (or its affiliates) shall deem fit.
Bolded parts - very contradicting. As you are surfing, it's collecting info about yourself. As and when you feedback or complain Starhub, be prepared to receive spam afterwards.
Singtel/Singnet -
http://home.singtel.com/news_centre/media_resource/privacy.aspOn the whole, our government websites are clean. I wouldn't blame NLB using the tracking pest. One, it needs to buy books. Without knowing Singaporeans' tastes, it's hard to buy. It also recommends books on a regular basis, so a profile of the people visiting it is good. Otherwise, good books are hard to find. Two, it doesn't spam you, so the data received have been kept confidential, a good sign. Three, no funny advertisements/pop ups/ pop unders. Fair enough, it's not used for other purposes.